The degradation of real terms such as "fascist", "racist", "misogynist", or even "rape" means, as predicted, that no one trusts the use of them any more. They only work with the full force that they should carry if they are used correctly.
Fascism : a populist political philosophy, movement, or regime (such as that of the Fascisti) that exalts nation and often race above the individual, that is associated with a centralized autocratic government headed by a dictatorial leader, and that is characterized by severe economic and social regimentation and by forcible suppression of opposition
And the Democrats are the race is more important than individuals - that's what identity politics is. But I wouldn't call it fascism still.
Antifascism is a self-designation of popcultural dimensions, similar to a Che Guevara shirt. It can be appropriated by anybody who's willing to sign off on the same vague image of an enemy. I have no idea if there are, indeed, terroristic cells in the US that appropriated the brand of Antifascism, but there are some in Germany[0][1].
But more interestingly, the brand hasn't always been free of ownership: it was first created by the Communist Party of Germany (KPD) in 1932 as a part of their internal and external stalinisation and their adoption of authoritarian structures and policies, which started from 1928 under the influence of the USSR. During that time, KPD proclaimed the main fascist adversary to be no other than the Social Democrats (SPD):
"Stalinisation of the KPD began under the leadership of Ernst Thälmann. Freedom of discussion and internal democracy were replaced piece by piece by (...) authoritarian leadership. (...) in 1929 Thälmann and Stalin agreed upon an ultra-left course against the SPD, concluding that the Social Democrats represented a form of 'social fascism'. (...) The theory of social fascism dictated that Nazis and Social Democrats were essentially two sides of the same coin. The primary enemy of the Communists was supposedly the Social Democrats" [2]
[0] https://en.wikipedia.org/wiki/Dresden_left-wing_extremism_tr...
[1] https://en.wikipedia.org/wiki/Budapest_Complex
[2] https://isj.org.uk/divided-they-fell-the-german-left-and-the...
Terrorism targets the mainstream population, not a bunch of radicals.
And I did not speak out
Because I was not a Communist
.
Then they came for the Socialists
And I did not speak out
Because I was not a Socialist
.
Then they came for the trade unionists
And I did not speak out
Because I was not a trade unionist
.
Then they came for the Jews
And I did not speak out
Because I was not a Jew
.
Then they came for me
And there was no one left
To speak out
- Martin Niemöller